Heavy duty Needle Bearing 1. HK,BK,HF,HFL series 2. high speed,low noise 3.OEM accepted. 4. Prompt delivery needle bearing Needle roller ... low cross-section and stiffness ,they are especially suitalble for bearing arrangements where radial space is limited .they are widely used ... Cage assemblies : K , K-ZW ,K-K ,K-ZWD series3) Heavy duty needle roller bearings : NK , NKS , RNA49,RNA69,RNA48,NKI,NKIS ...